1,044 prompts matching "The dot product worked out from components"
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Explain back: completing the square when the coefficient of x squared is not one
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Worked Example: Factorising a quadratic whose leading coefficient is not one
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Learn: Making the coefficient of x squared equal to one first
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Quiz: Completing the square on x squared plus 6x
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Practice: Working through a quadratic by completing the square, step by step
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Explain Back: An answer left in surd form after completing the square
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WAEC Prep: The minimum value of a quadratic found by completing the square
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Learn: Deriving the quadratic formula by completing the square
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Quiz: A negative value of b in the quadratic formula
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Practice: Giving the roots correct to two decimal places
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Explain Back: Leaving the roots of a quadratic in surd form
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WAEC Prep: What the formula gives when the discriminant is negative
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Learn: The sum of the roots as minus b over a
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Learn: What makes an expression in the roots symmetric
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Quiz: The value of one over alpha squared plus one over beta squared
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Practice: The value of alpha to the fourth plus beta to the fourth
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Explain Back: The value of alpha minus beta, all squared
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Learn: Making one unknown the subject of the linear equation
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Practice: Finding the matching value of the second unknown
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Explain Back: Writing the answers as ordered pairs
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